Jas - nothing much helped me when I was so crook when preggo with Gab. My doctor wouldn't give me maxalon even tho I had taken a couple of days off work just because of the m/s.
It was so hard being so sick AND working full time (and teaching is not exactly a cruisey job!). I feel for you. It totally sux.
Ginger didn't help me much either. I just kept reminding myself (like you just have) that it all meant bubby was growing etc. Not much consolation when you're hurling but hopefully in time you'll start to feel better.